Dear Friends. I get VS 2008 now. So I am trying complile freeswitch, the package is freeswitch-1.0.1.tar.gz . I do follow http://wiki.freeswitch.org/wiki/Installation_Guide#Windows .there are some problem: 1, I can not find the two file, I think it does not matter. I continuue. libs/js/src/jsautocfg.h libs/js/nsprpub/pr/include/prcpucfg.h 2, I deleted libs/apr/include/apr.h before I build. but it always appear once I begin build. then compiler show many repeat failure, can not find files windows.h,su_config,winsock2.h, mostly these three file. Error 1 fatal error C1083: Can not open file :“windows.h”: No such file or directory d:\freeswitch\freeswitch-1.0.1\libs\apr\include\apr.h 92 libapr error 176 fatal error C1083: Can not open file :“sofia-sip/su_config.h”: No such file or directory d:\freeswitch\freeswitch-1.0.1\libs\sofia-sip\libsofia-sip-ua\su\sofia-sip\su_types.h 37 libsofia_sip_ua_static Error 493 fatal error C1083: Can not open file :“winsock2.h”: No such file or directory d:\freeswitch\freeswitch-1.0.1\libs\udns\udns_rr_a.c 28 libudns please give me one hand. Best regard. Sincerlly London Hood